Python3安装turtle提示错误：Command "python setup.py egg_info" failed with error code 1

Collecting turtle
  Using cached https://files.pythonhosted.org/packages/ff/f0/21a42e9e424d24bdd0e509d5ed3c7dfb8f47d962d9c044dba903b0b4a26f/turtle-0.0.2.tar.gz
    ERROR: Complete output from command python setup.py egg_info:
    ERROR: Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/private/var/folders/1b/zd3_1j0d5cn5pz5cd20098ph0000gn/T/pip-install-ckvgi1nr/turtle/setup.py", line 40
        except ValueError, ve:
                         ^
    SyntaxError: invalid syntax
    ----------------------------------------
ERROR: Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/1b/zd3_1j0d5cn5pz5cd20098ph0000gn/T/pip-install-ckvgi1nr/turtle/

研究一下turtle的用法，我用的是python3.6 安装了一下，遇到了这个报错，现在记录一下解决办法：

https://pypi.org/project/turtle/#files

下载源包,手动解压，修改setup.py文件再安装。

cd turtle-0.0.2/

ls 

vim setup.py

找到图示位置，修改

except (ValueError, ve):

退出，保存

cd ..
pip install -e turtle-0.0.2

 安装成功